Hi, have done a search and come up blank.
Got dust under plastic screen, on face of lcd. I have removed the 4 screws behind battery cover and managed to prise apart the two halves of the case up to the infra red plastic/usb part at the top of the remote where it refuses to unclip.
Anyone got further than this??
Many thanks

Two screws under the front trim.

http://www.dtvcontrol.com/harmony/H720screw.jpg

Thanks Kevin T, there is no way I would have thought to look under there! I was thinking they were underneath the gold charging terminals on the back, so I would have trashed them looking!
Many Thanks